/*
 Xern Entity Relocation Network
 Copyright (C) 2011 Ronie Salgado <roniesalg@gmail.com>

 This library is free software; you can redistribute it and/or
 modify it under the terms of the GNU Lesser General Public
 License as published by the Free Software Foundation; either
 version 2.1 of the License, or (at your option) any later version.

 This library is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 Lesser General Public License for more details.

 You should have received a copy of the GNU Lesser General Public
 License along with this library; if not, write to the Free Software
 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301
*/

#ifndef SHADOW_LISTENER_HPP
#define SHADOW_LISTENER_HPP

#include <OgreRoot.h>
#include <OgreShadowCameraSetupPSSM.h>

namespace XernOgre
{
	class ShadowListener: public Ogre::SceneManager::Listener
	{
	public:
		ShadowListener(Ogre::SceneManager *sm, Ogre::ShadowCameraSetupPtr s);
		virtual ~ShadowListener();

		virtual void shadowTexturesUpdated(size_t numberOfShadowTextures);
	    virtual void shadowTextureCasterPreViewProj(Ogre::Light* light,Ogre::Camera* camera, size_t iteration);
	    virtual void shadowTextureReceiverPreViewProj(Ogre::Light* light,Ogre::Frustum* frustum);
	    virtual bool sortLightsAffectingFrustum(Ogre::LightList& lightList);

	    void SetCamera(Ogre::Camera *camera);

	private:
	    Ogre::ShadowCameraSetupPtr setup;
	    Ogre::PSSMShadowCameraSetup *pssm;
        Ogre::SceneManager *sceneManager;
        Ogre::Camera *currentCamera;
        Ogre::Camera *lastCamera;
	};
}

#endif //SHADOW_LISTENER_HPP
